The Israeli-Palestinian conflict has been both a major concern of American diplomacy since 1967 and the arena of persistent failure.

There are many reasons for America’s failure to broker a peace deal between Israel and the Palestinians but the most fundamental one is that it is a dishonest broker. As a result of its palpable partiality towards Israel, America has lost all credibility in the eyes not only of the Palestinians but of the wider Arab and Muslim worlds.

The so-called peace process has been all process and no peace. Peace talks that go nowhere slowly provide Israel with just the cover it needs to pursue its expansionist agenda on the West Bank.

The asymmetry of power between Israel and the Palestinians is so great that only a third party can bridge the gap. In plain language, this means leaning on Israel to end the occupation and to permit the emergence of an independent Palestinian state on the West Bank and the Gaza Strip.

In theory America is committed to a two-state solution to the conflict but in practise it has done very little to push Israel into such a settlement. It is not that America lacks the means to bring pressure to bear on Israel. On the contrary, Israel is crucially, and almost exclusively, dependent on America for military, diplomatic, and financial support.

America’s financial support amounts to three billion dollars a year. So the leverage is there. The real problem is that American leaders are either unable or unwilling to exercise this leverage in order to promote a just settlement of this tragic conflict.

The most depressing aspect of the situation is that despite its proven inability to make progress on the Palestinian track, America continues to cling to its monopoly over the peace process. In the aftermath of the June 1967 War, America arrogated to itself a near-monopoly over the diplomacy surrounding the Arab-Israeli conflict.

During the Cold War, the main purpose of American diplomacy was to exclude the Soviet Union, the ally of radical Arab states, from the quest for peace in the Middle East. After the end of the Cold war, America continued to marginalise Russia, the European Union, and the United Nations. The UN has the authority as well as a duty to regulate this conflict because it is a threat to international peace and security. But the Americans undermined its efforts and routinely used their veto on the Security Council to defeat resolutions that were critical of Israel.

American contempt towards the UN reached a new height during the two Republican administrations of George W. Bush. The attitude of the neoconservatives is illustrated by the following conversation between a senior UN official and a venerable Republican Senator. The official asked "Why are you Americans so hostile to the UN? Is it ignorance or is it indifference?" And the Senator allegedly replied: "I don’t know and I don’t care!"

Barack Obama's election was widely expected to usher in a more even-handed policy towards the Israeli-Palestinian conflict. In the Cairo speech of June 4 2009, Obama stated that the bond with Israel is unbreakable but he also expressed deep empathy for the Palestinians and wanted there to be no doubt that: "the situation for the Palestinian people is intolerable. And America will not turn our backs on the legitimate Palestinian aspiration for dignity, opportunity, and a state of their own".

Obama is an inspiring orator. However, to use an American phrase, he has talked the talk but he has not walked the walk. The rhetoric has changed but in practical terms there has been more continuity than change. Partiality towards Israel remains the order of the day and it vitiates the possibility of a genuinely even-handed policy.

To be fair to Obama, he recognised at the outset that Jewish settlements on the West Bank are the main obstacle to progress. He admitted, in effect, that there can be a peace process but no peace if Israel continues the colonisation of the West Bank. At his first meeting with Prime Minister Binyamin Netanyahu, on May 18 2008, Obama insisted on a complete settlement freeze.

A week later Secretary of State Hillary Clinton explained: "The President wants to see a stop to settlements. Not some settlements, not outposts, not natural growth exceptions… That is our position...And we intend to press that point". The position was admirably clear but she and the president failed to press the point. They backed down.

The direct Israeli-Palestinian peace talks launched by Secretary Clinton in Washington on September 2 are the best that could be expected after this and subsequent climb-downs. But these talks are an exercise in futility.

There is an Arabic saying that something that starts crooked, remains crooked. These peace talks started in a crooked way because they did not meet the most fundamental Palestinian requirement: a complete freeze on settlement activity.

All that Netanyahu reluctantly agreed to was a partial settlement freeze for a period of ten months. The ban did not apply to the 3,000 housing units that had already been approved or to East Jerusalem, which Israel had illegally annexed following the June 1967 Six-Day War.

When the ban expired on September 27, Netanyahu refused to extend it. Shirking his responsibility as prime minister, he simply called on the settlers to exercise restraint. A more vacuous statement is difficult to imagine. Predictably, as the Israeli media has reported, the bulldozers are back at work in the Jewish settlements near Nablus, Ramallah, and Hebron.

The conclusion is inescapable: Netanyahu is not a genuine partner for the Palestinians on the road to peace. Land-grabbing and peace-making simply do not go together and Netanyahu has opted for the former.

Netanyahu is like a man who, while negotiating the division of a pizza, continues to eat it.

The American position is pusillanimous and feeble. Instead of taking a firm position on the side of the Palestinians and pressing the point of principle, they press the weaker party to make more and more concessions. Under these conditions, the prospects of a peace deal between Israel and the Palestinian Authority are close to zero.

There is no light at the end of the tunnel, only more illegal settlements, and consequently more strife, more violence, more bloodshed, and ultimately another war.